Just type the following cheats in the game. Attention do not save your game while you are cheating because this will may damage your game.

Cheat	Wirkung
weapons, health, armor
LXGIWYL	weapons 1
KJKSZPJ	weapons 2
UZUMYMW	weapons 3
ROCKETMAN	jetpack
AIYPWZQP	parachute
WANRLTW	unlimited ammo
NCSGDAG	all weapons at hitman
OUIQDMW	aim while you are driving
HESOYAM	health, armor, $250.000
BAGUVIX	unlimited health
Police, statics, gangs
OSRBLHH	wanted-level +2*
ASNAEB	delete wanted-level
LJSPQK	wanted-level +6*
AEZAKMI	never be wanted
MUNASEF	adrenalin mode
KANGAROO	very high jump
IAVENJQ	1 hit, 1 kill
AEDUWNV	never be hungry
CVWKXAM	unlimited air under water
BTCDBCB	thick
KVGYZQK	thin
JYSDSOD	max muscles
OGXSDAG	max respect
EHIBXQS	max sexappeal
MROEMZH	gangs are everywere
BIFBUZZ	the streets are under control of the gangs
vehicles
AIWPRTON	Rhino
CQZIJMB	Bloodring Banger
JQNTDMH	Rancher
PDNEJOH	Racing car
VPJTQWV	Racing car 2
AQTBCODX	Romero
KRIJEBR	Stretch
UBHYZHQ	Trashmaster
RZHSUEW	Caddy
JUMPJET	Hydra
KGGGDKP	Vortex Hovercraft
OHDUDE	Hunter
AKJJYGLC	Quad
AMOMHRER	Tanker Truck
EEGCYXT	Dozer
URKQSRK	Stunt Plane
AGBDLCID	Monster
vehicles
CPKTNWT	destroy all cars
XICWMD	invisible cars
PGGOMOY	perfect handling
ZEIIVG	all traffic lights are green
YLTEICZ	aggressive car driver
LLQPFBN	pink cars
IOWDLAC	black cars
AFSNMSMW	flying boats
BGKGTJH	traffic with cheap cars
GUSNHDE	traffic with fast cars
RIPAZHA	cars can fly
JHJOECW	big jump
JCNRUAD	crash
COXEFGU	all cars with nitro
BSXSGGC	cars slide away if you hit them
THGLOJ	no traffic
FVTMNBZ	agricultural cars
VKYPQCF	taxis with nitro
VQIMAHA	all cars with maximal statistics
gameplay
AJLOJYQY	peds kill each other, golf club
BAGOWPG	you are wanted by everyone
FOOOXFT	everyone has a weapon
SZCMAWO	suicid
BLUESUEDESHOES	elvis is back, everywere
BGLUAWML	peds kill you with rocket launcher
CIKGCGX	beach party
AFPHULTL	ninja theme
BEKKNQV	slut magnet
IOJUFZN	riot-mode
PRIEBJ	funhouse theme
SJMAHPE	everyone has 9mm
BMTPWHR	agricultural cars, trucker-outfit
ZSOXFSQ	recrute everyone
weather and time
AFZLLQLL	sunny
ICIKPYH	sunshine
ALNSFMZO	cloudy
AUIFRVQS	rain
CFVFGMJ	fog
MGHXYRM	thunder
CWJXUOC	sandstorm
YSOHNUL	time runs faster
PPGWJHT	gameplay is faster
LIYOAAY	gameplay is slower
XJVSNAJ	midnight
OFVIAC	red heaven 21:00 o´clock